cnvd - cnvd-2018-04393

cnvd-2018-04393

Vulnerability from cnvd

Title: OpenSSH sshd拒绝服务漏洞

Description:

OpenSSH（OpenBSD Secure Shell）是OpenBSD计划组所维护的一套用于安全访问远程计算机的连接工具。该工具是SSH协议的开源实现，支持对所有的传输进行加密，可有效阻止窃听、连接劫持以及其他网络级的攻击。sshd是其中的一个独立守护进程。

OpenSSH 7.4之前版本中的sshd存在拒绝服务漏洞。远程攻击者可借助乱序的NEWKEYS消息利用该漏洞造成拒绝服务（空指针逆向引用和守护进程崩溃）。

Severity: 中

Patch Name: OpenSSH sshd拒绝服务漏洞的补丁

Patch Description:

OpenSSH 7.4之前版本中的sshd存在拒绝服务漏洞。远程攻击者可借助乱序的NEWKEYS消息利用该漏洞造成拒绝服务（空指针逆向引用和守护进程崩溃）。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://www.openssh.com/releasenotes.html

Reference: http://blog.swiecki.net/2018/01/fuzzing-tcp-servers.html

Impacted products

Name
OpenSSH OpenSSH <7.4

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2016-10708"
    }
  },
  "description": "OpenSSH\uff08OpenBSD Secure Shell\uff09\u662fOpenBSD\u8ba1\u5212\u7ec4\u6240\u7ef4\u62a4\u7684\u4e00\u5957\u7528\u4e8e\u5b89\u5168\u8bbf\u95ee\u8fdc\u7a0b\u8ba1\u7b97\u673a\u7684\u8fde\u63a5\u5de5\u5177\u3002\u8be5\u5de5\u5177\u662fSSH\u534f\u8bae\u7684\u5f00\u6e90\u5b9e\u73b0\uff0c\u652f\u6301\u5bf9\u6240\u6709\u7684\u4f20\u8f93\u8fdb\u884c\u52a0\u5bc6\uff0c\u53ef\u6709\u6548\u963b\u6b62\u7a83\u542c\u3001\u8fde\u63a5\u52ab\u6301\u4ee5\u53ca\u5176\u4ed6\u7f51\u7edc\u7ea7\u7684\u653b\u51fb\u3002sshd\u662f\u5176\u4e2d\u7684\u4e00\u4e2a\u72ec\u7acb\u5b88\u62a4\u8fdb\u7a0b\u3002\r\n\r\nOpenSSH 7.4\u4e4b\u524d\u7248\u672c\u4e2d\u7684sshd\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u501f\u52a9\u4e71\u5e8f\u7684NEWKEYS\u6d88\u606f\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\u548c\u5b88\u62a4\u8fdb\u7a0b\u5d29\u6e83\uff09\u3002",
  "discovererName": "OpenBSD",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://www.openssh.com/releasenotes.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-04393",
  "openTime": "2018-03-06",
  "patchDescription": "OpenSSH\uff08OpenBSD Secure Shell\uff09\u662fOpenBSD\u8ba1\u5212\u7ec4\u6240\u7ef4\u62a4\u7684\u4e00\u5957\u7528\u4e8e\u5b89\u5168\u8bbf\u95ee\u8fdc\u7a0b\u8ba1\u7b97\u673a\u7684\u8fde\u63a5\u5de5\u5177\u3002\u8be5\u5de5\u5177\u662fSSH\u534f\u8bae\u7684\u5f00\u6e90\u5b9e\u73b0\uff0c\u652f\u6301\u5bf9\u6240\u6709\u7684\u4f20\u8f93\u8fdb\u884c\u52a0\u5bc6\uff0c\u53ef\u6709\u6548\u963b\u6b62\u7a83\u542c\u3001\u8fde\u63a5\u52ab\u6301\u4ee5\u53ca\u5176\u4ed6\u7f51\u7edc\u7ea7\u7684\u653b\u51fb\u3002sshd\u662f\u5176\u4e2d\u7684\u4e00\u4e2a\u72ec\u7acb\u5b88\u62a4\u8fdb\u7a0b\u3002\r\n\r\nOpenSSH 7.4\u4e4b\u524d\u7248\u672c\u4e2d\u7684sshd\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u501f\u52a9\u4e71\u5e8f\u7684NEWKEYS\u6d88\u606f\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\u548c\u5b88\u62a4\u8fdb\u7a0b\u5d29\u6e83\uff09\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "OpenSSH sshd\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "OpenSSH OpenSSH \u003c7.4"
  },
  "referenceLink": "http://blog.swiecki.net/2018/01/fuzzing-tcp-servers.html",
  "serverity": "\u4e2d",
  "submitTime": "2018-01-24",
  "title": "OpenSSH sshd\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2016-10708 (GCVE-0-2016-10708)

Vulnerability from cvelistv5

Published

2018-01-21 22:00

Modified

2024-08-06 03:30

Severity ?

CWE

Summary

sshd in OpenSSH before 7.4 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an out-of-sequence NEWKEYS message, as demonstrated by Honggfuzz, related to kex.c and packet.c.

References

▼	URL	Tags
	https://www.openssh.com/releasenotes.html	x_refsource_MISC
	https://security.netapp.com/advisory/ntap-20180423-0003/	x_refsource_CONFIRM
	https://lists.debian.org/debian-lts-announce/2018/01/msg00031.html	mailing-list, x_refsource_MLIST
	https://anongit.mindrot.org/openssh.git/commit/?id=28652bca29046f62c7045e933e6b931de1d16737	x_refsource_MISC
	https://usn.ubuntu.com/3809-1/	vendor-advisory, x_refsource_UBUNTU
	http://www.securityfocus.com/bid/102780	vdb-entry, x_refsource_BID
	https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html	mailing-list, x_refsource_MLIST
	http://blog.swiecki.net/2018/01/fuzzing-tcp-servers.html	x_refsource_MISC
	https://kc.mcafee.com/corporate/index?page=content&id=SB10284	x_refsource_CONFIRM
	https://support.f5.com/csp/article/K32485746?utm_source=f5support&amp%3Butm_medium=RSS	x_refsource_CONFIRM
	https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

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          },
          {
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          },
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        },
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          ],
          "url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10284"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
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          "url": "https://support.f5.com/csp/article/K32485746?utm_source=f5support\u0026amp%3Butm_medium=RSS"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf"
        }
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  },
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  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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